Features:
•Test of double-twisted cables: Switch on the power. (S is slow automatic grade, M is manual.)
•Put cables into both main tester and remote tester.
•The lights of the main tester will turn on sequentially from 1 to G.
•Test correspondingly double-twisted cables 1, 2, 3, 4, 5, 6, 7, 8 and Ground.
•Capable to judge wrong connection, short circuit and open circuit.
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